We'd like add a proper "Readiness" screen for TDI's. We've got the info we need for newer ALH engines, but it would be helpful for people with a 1997-1999 AHU (Mk.3 Golf/Jetta or B4 Passat) to check Meauring Block Group 17 and post *exactly* what you see there. In fact, it would be great if you could check it, then clear fault codes (even if you don't have any) and check again.

Any new data on this subject? I have a '98 Jetta TDI w/ AHU engine. Emissions testing is telling them that the EGR readiness code is not complete yet. It has been over a year since I have disconnected the battery, yet I can't get the EGR to the READY state. From what I can tell thru using VAG-COM, only 01 (engine), 15 (airbags) and 56 (radio) even do anything on my USA Jetta with manual tranny. Scanning 01 shows no problems, but when doing a READINESS check, it comes back with "Readiness Status Not Available! Vehicle not OBD-II compatible? Data: E7 11 20 20".

I'm beginning to think that it may never work, but I only get a 30 day extension on my plates with proof of failure caused by READINESS codes.

When I check reddiness for vt state inspection on an 97-98 jetta or a 97 B4 passat I use the generic OBDII function/protocol of VagCom or equiv to check it.
That is the only way to check readiness on theese controllers that I know of
028 906 021 GQ
028 906 021 FA
028 906 021 ED
028 906 021 JB

Any new data on this subject? I have a '98 Jetta TDI w/ AHU engine. Emissions testing is telling them that the EGR readiness code is not complete yet. It has been over a year since I have disconnected the battery, yet I can't get the EGR to the READY state. From what I can tell thru using VAG-COM, only 01 (engine), 15 (airbags) and 56 (radio) even do anything on my USA Jetta with manual tranny. Scanning 01 shows no problems, but when doing a READINESS check, it comes back with "Readiness Status Not Available! Vehicle not OBD-II compatible? Data: E7 11 20 20".

I'm beginning to think that it may never work, but I only get a 30 day extension on my plates with proof of failure caused by READINESS codes.

And even after all this time people still think unhooking the battery will do anything on this car. Do they not read anything about waht they are trying to do?.

What makes you say that? If you are referring to me, I disconnected the battery for other reasons, not the reset the ECM. If you read carefully, it has been many months and I am still seeing a "NOT READY". That is what I am trying to solve.

Quote:

Originally Posted by Ifixit

When I check reddiness for vt state inspection on an 97-98 jetta or a 97 B4 passat I use the generic OBDII function/protocol of VagCom or equiv to check it.
That is the only way to check readiness on theese controllers that I know of
028 906 021 GQ
028 906 021 FA
028 906 021 ED
028 906 021 JB

The generic OBDII function/protocol doesn't work for me - I see almost the exact same thing as ALCO except for the data code at the end of the statement.

Quote:

Originally Posted by johnboy00

You guys do realize that this thread got bumped up from 8 years ago, Right?

I'm pretty sure he got the information he needed a long, long time ago.